Summary of significant accounting policies - Schedule of Significant Expenses (Details) - Reportable Subsegments [Member] - USD ($) |
12 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
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| Segment Reporting [Line Items] | ||
| Revenue | $ 10,265,613 | $ 7,722,510 |
| Cost of revenues | (8,015,770) | (5,610,148) |
| Salaries and employee benefits | (385,294) | (324,336) |
| Office expenses | (246,443) | (148,676) |
| Freight and port charges | (134,921) | (122,737) |
| Travel and entertainment expenses | (32,245) | (28,473) |
| Exhibition fees | (63,050) | (72,646) |
| Depreciation of fixed assets | (40,899) | (44,505) |
| Amortization of land-use rights | (16,950) | (16,681) |
| Research and development expenses | (381,958) | (287,922) |
| Other segment items | 17,231 | 28,960 |
| Government subsidy | 621,728 | 233,032 |
| Income tax expense | (159,069) | 0 |
| Interest income | 1,477 | 1,050 |
| Interest expense | (76,178) | (98,464) |
| Segment net income | 1,353,272 | 1,230,964 |
| Reconciliation of profit or loss | 0 | 0 |
| Adjustments and reconciling items | 0 | 0 |
| Consolidated and combined net income | $ 1,353,272 | $ 1,230,964 |
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- Definition The amount of exhibition fees. No definition available.
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- Definition The amount of freight and port charges. No definition available.
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- Definition The amount of government subsidy. No definition available.
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- Definition The aggregate cost of office expenses. No definition available.
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- Definition The amount of segment net income (loss). No definition available.
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- Definition The amount of travel and entertainment expenses. No definition available.
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- Definition Amount of amortization expense for finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The aggregate cost of goods produced and sold and services rendered during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of interest expense classified as nonoperating. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of expense for research and development. Includes, but is not limited to, cost for computer software product to be sold, leased, or otherwise marketed and writeoff of research and development assets acquired in transaction other than business combination or joint venture formation or both. Excludes write-down of intangible asset acquired in business combination or from joint venture formation or both, used in research and development activity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of other expense (income) and loss (gain) calculated as difference between segment revenue and separately disclosed expense category to arrive at segment profit (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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